as in deceit
the tendency to tell lies
her memoirs have such an air of pervasive mendaciousness that she seems to have lost all sense of what truth is
Synonyms & Similar Words
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Antonyms & Near Antonyms
Example Sentences
Recent Examples of Synonyms for mendaciousness
Noun
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Barragán brings a surprising depth and empathy to The Yahoo Boys, to the tin roofs and traffic jams of Lagos, the SIM cards and Apple IDs that buttress this edifice of deceit.—
Dan Piepenbring,
Harpers Magazine,
26 May 2026 -
Soundtrack to a Coup d’Etat, the 2024 documentary about the State Department’s use of jazz diplomacy in Africa amid CIA assassination plots, sets Nikita Khrushchev’s fist and Allen Dulles’s deceit against the Cold War’s swinging anti-colonial score.—
Michael Scherer,
The Atlantic,
24 May 2026
Noun
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Antisocial personality includes a persistent pattern of traits such as callousness, lack of concern, deceitfulness, and irresponsibility, Ryan said.—
Harriet Ramos,
Fort Worth Star-Telegram,
29 Apr. 2026
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Perfidy — from the French perfidie via the Latin perfidia — means deceitfulness, treachery or a breach of faith or promise.—
Harmeet Kaur,
CNN Money,
21 Jan. 2026
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Cite this Entry
“Mendaciousness.” Merriam-Webster.com Thesaurus, Merriam-Webster, https://www.merriam-webster.com/thesaurus/mendaciousness. Accessed 4 Jun. 2026.
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